IBM SPSS COMPLEX SAMPLES 19 manual Plots

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Chapter 12

Plots

Figure 12-8

Cox Regression dialog box, Plots tab

The Plots tab allows you to request plots of the hazard function, survival function, log-minus-log of the survival function, and one minus the survival function. You can also choose to plot confidence intervals along the specified functions; the confidence level is set on the Options tab.

Predictor patterns. You can specify a pattern of predictor values to be used for the requested plots and the exported survival file on the Export tab. Note that these options are not available if time-dependent predictors defined on the Predictors tab are included in the model.

„Plot Factors at. By default, each factor is evaluated at its highest level. Enter or select a different level if desired. Alternatively, you can choose to plot separate lines for each level of a single factor by selecting the check box for that factor.

„Plot Covariates at. Each covariate is evaluated at its mean. Enter or select a different value if desired.